Answer / dileep

At the time of starting a tube choke gives rise to high
voltage by di/dt nearly 1000 volts by starter ON-OFF
function rate of change of voltage becomes high due to
inductance of choke. This high voltage starts ionization of
gas in the tube. Once gas gets ionised and starts
conducting then starter gets out of circuit and circuit is
completed only through choke which now share voltage(limit
voltage) for tube because after esabilishing ionization now
to maintain it only nearly half of the voltage is required.

Answer / manish tailor

The function of choke is to provide high voltage enough for
ionization to take place in a tube light and after
establishment and substenance of ionization, limit the
voltage across the tube. That is the reason why a tube
fuses when the choke is shorted.

Answer / nimish

To start the tubelight. we have to ionise the gas inside
tubelight like murcury which ionise at high voltage around
1000 to 1500 V it is provided by choke.

Answer / suchak nimish

It is used to provide high voltage approximately 1000 to
1500 Volt.

Answer / rathnam

the property of the inductor is to oppose the rate of
change of current through it suddenly. At the time of
starting it requires high voltage to ionise the gas (
through creating potential difference between the
electrodes) in the tube so choke creates required potential.
The starter is same as that of a capacitor, to improve the
power factor the total system(connection of R and L) it is
required.

Answer / ramesh

The choke acts a regulator and controls the current flow
thro' the flourescent tube.

Answer / sabarinathan frm sec

the purpose of choke in a fluorescent lamp is to increase
the voltage momentarily,

Answer / selvan

answer 3 is very correct

Answer / sudibala

answer 3 is correct

Answer / radhakrishnan p.n.

answer 3 very correct

What are the section criteria for cables. Now everywhere XLPE power cable is used or PVC is also used?.

0 Answers   DAE,

how to select a breaker (MCB,MCCB,ELCB) for 18.5 kw, 3 ph. 480 v, 60 hz induction motor?

4 Answers  

what is difference b/w HT & LT and the range of HT & LT ?

22 Answers   AF, Schneider,

The Howland current source produces a A Unidirectional floating load current B Bidirectional single-ended load current C Unidirectional single-ended load current D Bidirectional floating load current

0 Answers  

which one is more efficient, torq, power & ecnomy with the same frame size AC motor / DC motor?

0 Answers  

What is the difference between RCD & RCCB, Where it can be used

3 Answers  

What are the different sizes of cables for H.T and L.T side of supply?

7 Answers   Bhel, BSES, Karthik Industries, Lanco, Nedco, Shilpa Electrical Engineers, TATA, Torrent Power,

What is the Surge suppresor? Why using in a UDB's and How it works?

0 Answers  

How to design the no. of ceiling fans required in 5mtr X 10 mtr X 3 Mtr hight room?

0 Answers  

what is the practical application of full adder circuit?

0 Answers   College School Exams Tests,

What are types of losses in the Transmisson Lines ?

4 Answers   GE,

What is the criteria for selecting the voltage classes of an AC Induction Motor.The KW rating above/below which ht/lt selection is made may be provided in details.

0 Answers   DAE,